when my car gets up to around 4000rpm, i hear an anoying rattle, and i have to shift, because its anoying,
haha
what should i do,

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1990 Honda Civic Si Hatchback

This may be the common Civic issue caused by a loose exhaust heat shield.

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DIY 92-00 Civic Check Engine Light (CEL) http://www.honda-tech.com/zerothread/1901557
Manuals http://hondatech.info/downloads/Auto/Manuals/Civic/
97 Civic DX sedan, D16Y7 MT --- 00 Civic EX coupe, D16Y8 AT

does your exhaust move back and forth when ur just sittin in park? like if u moved it with your hand. cuz i had the same problem on my old car and i just added another bracket to hold it tighter and it went away

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-08 Civic LX Galaxy Gray
-5 speed manual transmission
-18in Drag DR-31's

Is it an aftermarket exhaust? When im on the high way, the muffler hanger hits the frame and rttles. and some times when i tale a turn it hits the frame.

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My 1996 Civic HX
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